CVE-2026-1088 is a medium-severity CSRF vulnerability found in the Login Page Editor plugin for WordPress, developed by zero1zerouk. The vulnerability exists in all versions up to and including 1.2 due to the absence of nonce validation on the AJAX action devotion_loginform_process(). Nonces are security tokens used in WordPress to verify that requests originate from legitimate users and prevent unauthorized actions. Without nonce validation, attackers can craft malicious requests that, when executed by an authenticated administrator (via clicking a link or visiting a crafted page), cause unauthorized changes to the plugin’s login page settings. This attack vector requires no authentication by the attacker but does require user interaction from an administrator, making it a CSRF attack. The impact is limited to integrity, as attackers can alter login page configurations, potentially enabling further attacks such as phishing or bypassing login protections. Confidentiality and availability are not directly affected. The vulnerability has a CVSS v3.1 score of 4.3, reflecting low complexity of attack but limited impact scope. No patches or exploit code are currently publicly available, and no known active exploitation has been reported. The vulnerability is classified under CWE-352, which covers CSRF issues. Organizations using this plugin should prioritize updating or applying nonce validation to the AJAX endpoint to prevent unauthorized configuration changes.

The primary impact of CVE-2026-1088 is on the integrity of WordPress sites using the Login Page Editor plugin. By exploiting this CSRF vulnerability, attackers can alter login page settings without authentication, potentially enabling phishing, redirecting users, or weakening login security measures. This can lead to increased risk of credential theft or unauthorized access if attackers manipulate login forms or related settings. Although confidentiality and availability are not directly compromised, the altered login page could facilitate further attacks that impact these aspects. The requirement for administrator interaction limits the attack scope but does not eliminate risk, especially in environments with many administrators or less security awareness. Organizations relying on this plugin face reputational damage, potential data breaches, and increased operational risk if exploited. The absence of known exploits reduces immediate threat but does not preclude future attacks once exploit code becomes available.

To mitigate CVE-2026-1088, organizations should immediately update the Login Page Editor plugin to a version that includes nonce validation on the devotion_loginform_process() AJAX action once available. In the absence of an official patch, administrators can implement manual nonce checks by modifying the plugin code to verify WordPress nonces on all AJAX requests that modify settings. Additionally, administrators should be trained to avoid clicking suspicious links and to verify the legitimacy of requests affecting administrative functions. Employing web application firewalls (WAFs) with CSRF protection rules can help block forged requests. Restricting administrative access to trusted networks or VPNs reduces exposure. Regular monitoring of login page configurations and audit logs can detect unauthorized changes early. Finally, maintaining a robust backup and recovery strategy ensures quick restoration if unauthorized modifications occur.